Footwear sole



FIG. 1 is a front elevational view of a footwear sole showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken dot-dot-dash line(s) define the bounds of the claim and form no part thereof. 

I claim the ornamental design for a footwear sole, as shown and described. 